/**
 * @comp 软通动力
 * test_systeminfo >>> org.hyperic.sigar.cmd
 * 2010下午03:20:36
 */
package com.app.util.encrypt;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Pattern;


public class GetMacAddress {
	/** *//**
     * Return Opertaion System Name;
     *
     * @return os name.
     */
    public static String getOsName(){
        String os = "";
        os = System.getProperty("os.name");
        return os;
    }

    /** *//**
     * Returns the MAC address of the computer.
     *
     * @return the MAC address
     */
    public static String getMACAddress(){
        String address = "";
        String os = getOsName();
        if (os.startsWith("Windows")){
            try{
                String command = "cmd.exe /c ipconfig /all";
                Process p = Runtime.getRuntime().exec(command);
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line;
                while ((line = br.readLine()) != null){
                    if (line.indexOf("Physical Address") > 0){
                        int index = line.indexOf(":");
                        index += 2;
                        address = line.substring(index);
                        break;
                    }
                }
                br.close();
                return address.trim();
            } catch (IOException e){
            }
        } else if (os.startsWith("Linux")){
            String command = "/bin/sh -c ifconfig -a";
            Process p;
            try{
                p = Runtime.getRuntime().exec(command);
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line;
                while ((line = br.readLine()) != null){
                    if (line.indexOf("HWaddr") > 0){
                        int index = line.indexOf("HWaddr") + "HWaddr".length();
                        address = line.substring(index);
                        break;
                    }
                }
                br.close();
            } catch (IOException e){
            }
        }else if (os.startsWith("Solaris")){
            String command = "netstat -pn |grep SPLA | awk  '{print $5}'";
            Process p;
            try{
                p = Runtime.getRuntime().exec(command);
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line;
                while ((line = br.readLine()) != null){
                    if (Pattern.matches("\\w{2}:\\w{2}:\\w{2}:\\w{2}:\\w{2}:\\w{2}", line)){
                        address = line;
                        break;
                    }
                }
                br.close();
            } catch (IOException e){
            }
        }
        address = address.trim();
        return address;
    }

}
